Saving Changes is Not Permitted (SQL Server 2008 R2)

We just upgraded our development VMs at work, and I got bitten by one of the more annoying default settings in SQL Server Management Studio again. I imported some data for use in some queries and needed to change one of the column types. But when I tried to save the change, I got the dreaded “Saving changes is not permitted.” error.

Fortunately, this blog post directed me to the setting I needed to change in order for SSMS to do what I wanted.